Fiddler capturing and decrypting traffic on a different network

Having recently worked through a number of Exchange ActiveSync support cases it was necessary to setup a Fiddler proxy on a different network than the mobile device I was testing with. If you check Telerik’s article on ‘Capturing traffic from another machine’ you will see the information is pretty sparse. In my working scenario I…

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Run OffCAT via scripted command line without installing on target computer

What if Microsoft support asks you to run an OffCAT scan against a remote computer? You will need to install the application and run the scan. Perhaps you may not be able to install additional software such as in terminal server / Citrix environments. This script can run an OffCAT scan using some Powershell and…

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Office 365 Dynamic Distribution Groups Filtered by On-Premise Organization Unit (OU).

I have been asked a number of times if it is possible to create Dynamic Distribution Groups in Office 365 filtered by the On-Premise Organization Unit (OU). I recently discovered a method to achieve this with some collaboration with a couple of colleagues. Essentially we need to create an inbound synchronization rule in AADConnect to…

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Exchange Online Cross Tenant Calendar Free/Busy Availability Information

I was recently asked how to enable cross tenant calendar lookup, for arranging meetings, where two organizations are running their email services in Exchange Online. This happened to be something I had not thought about before, however in a company merger situation this would be an invaluable tool. Fortunately within Exchange Online the building blocks…

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Hybrid Configuration Wizard – DataStrings.InvalidSmtpDomainName(domain) error connecting to On-Premise Exchange

I recently ran into an issue with a customer who was running the new Hybrid Configuration Wizard (https://aka.ms/taphcw), where the tool was unable to connect to the Exchange On-Premise environment, with the error DataStrings.InvalidSmtpDomainName(domain). The underlining cause was configuration data remaining from a decommissioned Exchange server, within the Exchange configuration in Active Directory. Once this configuration was…

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